Browsing by Author "Quintal, Filipe"
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- Energy monitoring in the wild: platform development and lessons learned from a real-world demonstratorPublication . Quintal, Filipe; Garigali, Daniel; Vasconcelos, Dino; Cavaleiro, Jonathan; Santos, Wilson; Pereira, LucasThis paper presents the development and evaluation of EnnerSpectrum, a platform for electricity monitoring. The development was motivated by a gap between academic, fully custom made monitoring solutions and commercial proprietary monitoring approaches. EnnerSpectrum is composed of two main entities, the back end, and the Gateway. The back end is a server comprised of flexible entities that can be configured to different monitoring scenarios. The Gateway interacts with equipment at a site that cannot interact directly with the back end. The paper presents the architecture and configuration of EnnerSpectrum for a long-term case study with 13 prosumers of electricity for approximately 36 months. During this period, the proposed system was able to adapt to several building and monitoring conditions while acquiring 95% of all the available consumption data. To finalize, the paper presents a set of lessons learned from running such a long-term study in the real world.
- A global monitoring system for electricity consumption and production of household roof-top PV systems in MadeiraPublication . Torabi, Roham; Rodrigues, Sandy; Cafôfo, Nuno; Pereira, Lucas; Quintal, Filipe; Nunes, Nuno; Dias, Fernando MorgadoThis paper describes recent work on the development of a wireless-based remote monitoring system for household energy consumption and generation in Madeira Island, Portugal. It contains three different main sections: (1) a monitoring system for consumed and produced energy of residencies equipped with photovoltaic (PV) systems, (2) developing a tool to predict the electricity production, (3) and proposing a solution to detect the PV system malfunctions. With the later tool, the user (owner) or the energy management system can monitor its own PV system and make an efficient schedule use of electricity at the consumption side. In addition, currently, the owners of PV systems are notified about a failure in the system only when they receive the bill, whereas using the proposed method conveniently would notify owners prior to bill issue. The artificial neural network was employed as a tool together with the hardware-based monitoring system which allows a daily analysis of the performance of the system. The comparison of the predicted value of the produced electricity with the actual production for each day shows the validity of the method.
- HapWheel: in-car infotainment system feedback using haptic and hovering techniquesPublication . Quintal, Filipe; Lima, MarcoAbstract—In-car devices are growing both in complexity and capacity, integrating functionalities that used to be divided among other controls in the vehicles. These systems appear increasingly in the form of touchscreens as a cost-saving measure. Screens lack the physicality of traditional buttons or switches, requiring drivers to look away from the road to operate them. This paper presents the design, implementation, and two studies that evaluated HapWheel, a system that provides the driver with haptic feedback in the steering wheel while interacting with an Infotainment System. Results show that the proposed system reduced both the duration of and the number of times a driver looked away from the road. HapWheel was also successful at reducing the number of mistakes during the interaction.
- HomeTree: an art inspired mobile eco-feedback visualizationPublication . Quintal, Filipe; Nisi, Valentina; Nunes, Nuno; Barreto, Mary; Pereira, LucasThis paper presents HomeTree a prototype of an art-inspired mobile eco feedback system. The system is implemented on a tablet PC and relies on a non intrusive energy-monitoring infrastructure to access consumption and power event information. Our prototype addresses an important problem in eco feedback, which is the fact that users loose interest about their energy consump tion after a period of several weeks. To accomplish this HomeTree implements a dual visualization strategy. Initially HomeTree presents users with a screensa ver that shows energy consumption mapped in a dynamic illustration of the lo cal forest. Through this strategy we leverage the emotional connection between the short-term energy consumption and the long-term effects on nature through the local depicted landscape. In a second mode of operation users can interact with HomeTree directly by checking the historical records of their consumption data, and check which days or weeks they have reduced or increased consump tion. Furthermore a comparison with a more objective baseline, such as the city of Funchal energy consumption is provided, in order to give users a sense of the level of their consumption in a wider context.
- MyTukxi: low cost smart charging for small scale EVsPublication . Quintal, Filipe; Scuri, Sabrina; Barreto, Mary; Pereira, Lucas; Vasconcelos, Dino; Pestana, DanielAs the electrification of the transportation sector grows the electric grid must handle the new load resulting from electric vehicles (EV) charging. The integration of this new load in the grid has been subject to work in the smart-charging research field, however, while normal-sized EVs often offer chargers or other functions that support smart-charging, smaller EVs do not, which could be problem atic. Especially considering that the consumption of small EV when aggregated can be significant. This article presents the motivation and development behind the development of MyTukxi, a hardware and software system that aims at implementing smart-charging algorithms for low consuming electric vehicles (EV), interacting with drivers to compensate for the lack of charging control in such vehicles.
- SINAIS from Fanal: design and evaluation of an art-inspired eco-feedback systemPublication . Nisi, Valentina; Nunes, Nuno Jardim; Quintal, Filipe; Barreto, MaryIn this paper we present the challenges exposed during the designing, implementing and assessment of a novel eco feedback system resulting from the intersection of human computer interaction (HCI), and Digital Art. We explore how a digital art mode of inquiry can contribute to expose existing challenges in eco-feedback technology. Our new art inspired eco-feedback visualization, maps electricity consumption to effects on natural elements of the local natural landscape. The feedback was piloted with eight local families for four weeks. Reactions of the users were assessed through interviews and quantitative measures. Our findings showed that users found the mapping of the eco feedback to artistic representations of elements of the natural environment somehow compelling, despite lacking of clear quantitative information. In conclusion, the conducted study provide useful findings and insights into future deployment of eco-feedback using artistic visualizations, information visualization and motivating behavior change.
- The acceptance of energy monitoring technologies: the case of local prosumersPublication . Barreto, Mary; Pereira, Lucas; Quintal, FilipeWith transformations happening in the electricity sector, we need to ensure consumers have access to updated and correct information to accompany such changes. Consumers need to understand technologies available to them but also, learn how to use them to optimize their personal investment in such types of equipment. In this paper, we explore how a group of local pro sumers has adopted energy monitoring technologies, their day to-day strategies, and expectations when handling such systems. We studied 11 prosumers and the technologies they have used for three years, evaluated their satisfaction with the feedback provided and analyzed how a more modern visualization of their energy practices was introduced and adopted into their daily lives. We conducted interviews and questionnaires to evaluate their engagement with these tools. This initial work suggests this particular group of users have already a high level of knowledge about their systems, and as a result have integrated these into their routines. However, more support would be needed from other local actors to help them reach more benefits and as such, more satisfaction as consumers. We conclude by reflecting on barriers that need to be addressed to increase user satisfaction with these systems.
- Understanding families’ motivations for sustainable behaviorsPublication . Barreto, Mary L.; Szóstek, Agnieszka; Karapanos, Evangelos; Nunes, Nuno J.; Pereira, Lucas; Quintal, FilipeWhile interest in eco-feedback technologies has peaked over the last decade, research increasingly high lights that simply providing information to individuals regarding their consumption behaviors does not guarantee behavior change. This has lead to an increasing body of work that attempts to characterize individuals’ latent motivations that drive sustainable behaviors. With this paper we aim at expanding this body of work by analyzing such motivations in the context of families. We report findings from inter views with 15 families who used an eco-feedback interface over a period of 2 years. Our study reveals that motivations for sustainable behavior were not only rooted in individuals’ environmental concerns and need for expense management but they also regarded: (i) individuals’ and families’ need for a sense of control and security, (ii) parents’ self-perceived responsibility of their role as parents and (iii) the percep tion of individual as well as family identity. We argue that in order for eco-feedback technologies to attain long-lasting behavioral changes in the domestic environment they need to address basic family needs that go beyond individual ideals of pro-environmental behavior
- Understanding goal setting behavior in the context of energy consumption reductionPublication . Scott, Michelle; Barreto, Mary; Quintal, Filipe; Oakley, IanHome energy use represents a significant proportion of total con sumption. A growing research area is considering how to help everyday users consume less. However, simply determining how to best reduce consumption remains a challenging task for many users. Based on goal setting theory, this paper presents two lab studies (based on the presentation of detailed scenarios and the solicitation of goal selections for the individuals depicted) in order to better understand how users make such decisions. It reveals a preference for goals that are perceived to be easy and specific, rather than those known to be effective (e.g. those that reduce energy consumption) or generic. Goal setting theory suggests that easy goals lead to low levels of commitment and motiva tion, suggesting such choices may be doubly ineffective. Ultimately, this paper contributes to a better understanding of users’ goal selections and argues this is a prerequisite to effectively supporting users in reducing resource consumption.
- Understanding the limitations of eco-feedback: a one-year long-term studyPublication . Pereira, Lucas; Quintal, Filipe; Barreto, Mary; Nunes, Nuno J.For the last couple of decades the world has been witnessing a change in habits of energy consumption in domestic environments, with elec tricity emerging as the main source of energy consumed. The effects of these changes in our eco-system are hard to assess, therefore encouraging researchers from different fields to conduct studies with the goal of understanding and im proving perceptions and behaviors regarding household energy consumption. While several of these studies report success in increasing awareness, most of them are limited to short periods of time, thus resulting in a reduced knowledge of how householders will behave in the long-term. In this paper we attempt to reduce this gap presenting a long-term study on household electricity consump tion. We deployed a real-time non-intrusive energy monitoring and eco feedback system in 12 families during 52 weeks. Results show an increased awareness regarding electricity consumption despite a significant decrease in interactions with the eco-feedback system over time. We conclude that after one year of deployment of eco-feedback it was not possible to see any significant increase or decrease in the household consumption. Our results also confirm that consumption is tightly coupled with independent variables like the house hold size and the income-level of the families.